Cita APA (7th ed.)

Spellerberg, I. F. (1981). Ecological evaluation for conservation. Edward Arnold.

Cita Chicago (17th ed.)

Spellerberg, Ian F. Ecological Evaluation for Conservation. Londres: Edward Arnold, 1981.

Cita MLA (9th ed.)

Spellerberg, Ian F. Ecological Evaluation for Conservation. Edward Arnold, 1981.